Results
Title

Emerging horizons in chemiresistive gas sensing: when polyoxometalates meet mesoporous metal oxides.

Authors

TENG Yingmin; TAN Huaqiao; ZHAO Zhao; LI Yangguang

Abstract

Creating gas sensors that are highly selective and function at low temperatures based on semiconductor metal oxides (SMOs) is considered a difficult endeavor, and these sensors are extensively applied in medical diagnosis, industrial manufacturing, and in spacecraft within the aerospace sector. This review article delves into the emerging horizons of chemiresistive gas sensing, particularly focusing on the synergy between polyoxometalates (POMs) and block copolymers in self-assembly for the construction of ordered mesoporous metal oxides (MMOs). It highlights the advancements in gas sensing technology, emphasizing the role of POMs as precursors for MMOs, which offer high sensitivity and selectivity due to their unique physicochemical properties. The review covers various synthetic strategies and their impact on sensor performance, including low-temperature operation, high sensitivity, and selectivity towards specific gases. It also underscores the importance of nanostructure control, heteroatom doping, and the integration of noble metal catalysts in enhancing sensor capabilities. The article concludes with future research directions, suggesting the exploration of a broader range of detectable compounds and the integration of these materials into practical devices for real-world applications.

Subjects

METAL oxide semiconductors; GAS detectors; METAL catalysts; PRECIOUS metals; POLYOXOMETALATES

Publication

Journal of Molecular Science, 2024, Vol 40, Issue 5, p389

ISSN

1000-9035

Publication type

Academic Journal

DOI

10.13563/j.enki.jmolsci.2024.05.102